greenfoot
Class GreenfootImage
java.lang.Object
greenfoot.GreenfootImage
public class GreenfootImage extends java.lang.ObjectAn image to be shown on screen. The image may be loaded from an image file and/or drawn by using various drawing methods.
Constructor Summary 构造方法 GreenfootImage(GreenfootImage image)
Create a GreenfootImage from another GreenfootImage.
GreenfootImage(int width, int height) 构造一个高height宽width的空图片
Create an empty (transparent) image with the specified size.
GreenfootImage(java.lang.String filename) 构造一个本地图片组成的显示文件
Create an image from an image file.
Method Summary 其他方法
void clear() 清除图像
Clears the image.
void drawImage(GreenfootImage image, int x, int y) 把给定图片画入本图片
Draws the given Image onto this image
void drawLine(int x1, int y1, int x2, int y2) 画一条从(x1,y1)到(x2,y2)的直线
Draw a line, using the current drawing color, between the points (x1, y1) and (x2, y2).
void drawOval(int x, int y, int width, int height) 画椭圆
Draw an oval bounded by the specified rectangle with the current drawing color.
void drawPolygon(int[] xPoints, int[] yPoints, int nPoints) 画多边形
Draws a closed polygon defined by arrays of x and y coordinates.
void drawRect(int x, int y, int width, int height) 画矩形
Draw the outline of the specified rectangle.
void drawShape(java.awt.Shape shape) 画java.awt.Shape中存在的形状的图形
Draw a shape directly on the image.
void drawString(java.lang.String string, int x, int y) 在world中显示一些文字
Draw the text given by the specified string, using the current font and color.
void fill() 填充颜色
Fill the entire image with the current drawing dcolor.
void fillOval(int x, int y, int width, int height)
Fill an oval bounded by the specified rectangle with the current drawing color.
void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
Fill a closed polygon defined by arrays of x and y coordinates.
void fillRect(int x, int y, int width, int height)
Fill the specified rectangle.
void fillShape(java.awt.Shape shape)
Draw a filled shape directly on the image.
java.awt.image.BufferedImage getAwtImage()
Returns the java.awt.image.BufferedImage that backs this GreenfootImage.
java.awt.Color getColor()
Return the current drawing color.
java.awt.Color getColorAt(int x, int y)
Return the color at the given pixel.
java.awt.Font getFont()
Get the current font.
int getHeight()
Return the height of the image. int getTransparency() 透明度
Return the current transparency of the image.
int getWidth()
Return the width of the image.
void mirrorHorizontally() 镜像效果
Mirrors the image horizontally (flip around the x-axis).
void mirrorVertically() 竖直镜像效果
Mirrors the image vertically (flip around the y-axis).
void rotate(int degrees) 旋转degrees这么大的角度
Rotates this image around the center.
void scale(int width, int height) 放缩
Scales this image to a new size.
void setColor(java.awt.Color color)
Set the current drawing color.
void setColorAt(int x, int y, java.awt.Color color) 设置给定像素给定颜色
Sets the color at the given pixel to the given color.
void setFont(java.awt.Font f) 设置字体
Set the current font.
void setTransparency(int t)
Set the transparency of the image.
java.lang.String toString()
Return a text representation of the image.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
下面自己看吧，和前面差不多
Constructor Detail
GreenfootImage
public GreenfootImage(java.lang.String filename)
throws java.lang.IllegalArgumentExceptionCreate an image from an image file. Supported file formats are JPEG, GIF and PNG.
The file name may be an absolute path, or a base name for a file located in the project directory.
Parameters:
filename - Typically the name of a file in the images directory within the project directory.
Throws:
java.lang.IllegalArgumentException - If the image can not be loaded.
GreenfootImage
public GreenfootImage(int width,
int height)Create an empty (transparent) image with the specified size.
Parameters:
width - The width of the image in pixels.
height - The height of the image in pixels.
GreenfootImage
public GreenfootImage(GreenfootImage image)
throws java.lang.IllegalArgumentExceptionCreate a GreenfootImage from another GreenfootImage.
Throws:
java.lang.IllegalArgumentException
Method Detail
getAwtImage
public java.awt.image.BufferedImage getAwtImage()Returns the java.awt.image.BufferedImage that backs this GreenfootImage. Any changes to the returned image will be reflected in the GreenfootImage.
Returns:
The java.awt.image.BufferedImage backing this GreenfootImage
Since:
Greenfoot version 1.0.2
getWidth
public int getWidth()Return the width of the image.
Returns:
Width of the image.
getHeight
public int getHeight()Return the height of the image.
Returns:
Height of the image.
rotate
public void rotate(int degrees)Rotates this image around the center.
Parameters:
degrees -
scale
public void scale(int width,
int height)Scales this image to a new size.
Parameters:
width - Width of new image
height - Height of new image
mirrorVertically
public void mirrorVertically()Mirrors the image vertically (flip around the y-axis).
mirrorHorizontally
public void mirrorHorizontally()Mirrors the image horizontally (flip around the x-axis).
fill
public void fill()Fill the entire image with the current drawing dcolor.
drawImage
public void drawImage(GreenfootImage image,
int x,
int y)Draws the given Image onto this image
Parameters:
image - The image to draw onto this one.
x - x-coordinate for drawing the image.
y - y-coordinate for drawing the image.
setFont
public void setFont(java.awt.Font f)Set the current font. This font will be used for subsequent text operations.
getFont
public java.awt.Font getFont()Get the current font.
setColor
public void setColor(java.awt.Color color)Set the current drawing color. This color will be used for subsequent drawing operations.
Parameters:
color - The color to be used.
getColor
public java.awt.Color getColor()Return the current drawing color.
Returns:
The current color.
getColorAt
public java.awt.Color getColorAt(int x,
int y)Return the color at the given pixel.
Throws:
java.lang.IndexOutOfBoundsException - If the pixel location is not within the image bounds.
setColorAt
public void setColorAt(int x,
int y,
java.awt.Color color)Sets the color at the given pixel to the given color.
setTransparency
public void setTransparency(int t)Set the transparency of the image.
Parameters:
t - A value in the range 0 to 255. 0 is completely transparent (invisible) and 255 is completely opaque (the default).
getTransparency
public int getTransparency()Return the current transparency of the image.
Returns:
A value in the range 0 to 255. 0 is completely transparent (invisible) and 255 is completely opaque (the default).
fillRect
public void fillRect(int x,
int y,
int width,
int height)Fill the specified rectangle. The left and right edges of the rectangle are at x and x + width - 1. The top and bottom edges are at y and y + height - 1. The resulting rectangle covers an area width pixels wide by height pixels tall. The rectangle is filled using the current color.
Parameters:
x - the x coordinate of the rectangle to be filled.
y - the y coordinate of the rectangle to be filled.
width - the width of the rectangle to be filled.
height - the height of the rectangle to be filled.
clear
public void clear()Clears the image.
drawRect
public void drawRect(int x,
int y,
int width,
int height)Draw the outline of the specified rectangle. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height. The rectangle is drawn using the current color.
Parameters:
x - the x coordinate of the rectangle to be drawn.
y - the y coordinate of the rectangle to be drawn.
width - the width of the rectangle to be drawn.
height - the height of the rectangle to be drawn.
drawString
public void drawString(java.lang.String string,
int x,
int y)Draw the text given by the specified string, using the current font and color. The baseline of the leftmost character is at position ( x , y ).
Parameters:
string - the string to be drawn.
x - the x coordinate.
y - the y coordinate.
drawShape
public void drawShape(java.awt.Shape shape)Draw a shape directly on the image. Shapes are specified by the shape interface.
Parameters:
shape - the shape to be drawn.
fillShape
public void fillShape(java.awt.Shape shape)Draw a filled shape directly on the image. Shapes are specified by the shape interface.
Parameters:
shape - the shape to be drawn.
fillOval
public void fillOval(int x,
int y,
int width,
int height)Fill an oval bounded by the specified rectangle with the current drawing color.
Parameters:
x - the x coordinate of the upper left corner of the oval to be filled.
y - the y coordinate of the upper left corner of the oval to be filled.
width - the width of the oval to be filled.
height - the height of the oval to be filled.
drawOval
public void drawOval(int x,
int y,
int width,
int height)Draw an oval bounded by the specified rectangle with the current drawing color.
Parameters:
x - the x coordinate of the upper left corner of the oval to be filled.
y - the y coordinate of the upper left corner of the oval to be filled.
width - the width of the oval to be filled.
height - the height of the oval to be filled.
fillPolygon
public void fillPolygon(int[] xPoints,
int[] yPoints,
int nPoints)Fill a closed polygon defined by arrays of x and y coordinates.
This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.
The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.
Parameters:
xPoints - a an array of x coordinates.
yPoints - a an array of y coordinates.
nPoints - a the total number of points.
drawPolygon
public void drawPolygon(int[] xPoints,
int[] yPoints,
int nPoints)Draws a closed polygon defined by arrays of x and y coordinates. Each pair of (x, y) coordinates defines a point.
This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.
Parameters:
xPoints - an array of x coordinates.
yPoints - an array of y coordinates.
nPoints - the total number of points.
drawLine
public void drawLine(int x1,
int y1,
int x2,
int y2)Draw a line, using the current drawing color, between the points (x1, y1) and (x2, y2).
Parameters:
x1 - the first point's x coordinate.
y1 - the first point's y coordinate.
x2 - the second point's x coordinate.
y2 - the second point's y coordinate.
toString
public java.lang.String toString()Return a text representation of the image.
Class GreenfootImage
java.lang.Object
greenfoot.GreenfootImage
public class GreenfootImage extends java.lang.ObjectAn image to be shown on screen. The image may be loaded from an image file and/or drawn by using various drawing methods.
Version:
2.1
Author:
Poul Henriksen 这货老是出现是吧，这是平台的作者，日
Constructor Summary 构造方法
GreenfootImage(GreenfootImage image)
Create a GreenfootImage from another GreenfootImage.
GreenfootImage(int width, int height) 构造一个高height宽width的空图片
Create an empty (transparent) image with the specified size.
GreenfootImage(java.lang.String filename) 构造一个本地图片组成的显示文件
Create an image from an image file.
Method Summary 其他方法
void clear() 清除图像
Clears the image.
void drawImage(GreenfootImage image, int x, int y) 把给定图片画入本图片
Draws the given Image onto this image
void drawLine(int x1, int y1, int x2, int y2) 画一条从(x1,y1)到(x2,y2)的直线
Draw a line, using the current drawing color, between the points (x1, y1) and (x2, y2).
void drawOval(int x, int y, int width, int height) 画椭圆
Draw an oval bounded by the specified rectangle with the current drawing color.
void drawPolygon(int[] xPoints, int[] yPoints, int nPoints) 画多边形
Draws a closed polygon defined by arrays of x and y coordinates.
void drawRect(int x, int y, int width, int height) 画矩形
Draw the outline of the specified rectangle.
void drawShape(java.awt.Shape shape) 画java.awt.Shape中存在的形状的图形
Draw a shape directly on the image.
void drawString(java.lang.String string, int x, int y) 在world中显示一些文字
Draw the text given by the specified string, using the current font and color.
void fill() 填充颜色
Fill the entire image with the current drawing dcolor.
void fillOval(int x, int y, int width, int height)
Fill an oval bounded by the specified rectangle with the current drawing color.
void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
Fill a closed polygon defined by arrays of x and y coordinates.
void fillRect(int x, int y, int width, int height)
Fill the specified rectangle.
void fillShape(java.awt.Shape shape)
Draw a filled shape directly on the image.
java.awt.image.BufferedImage getAwtImage()
Returns the java.awt.image.BufferedImage that backs this GreenfootImage.
java.awt.Color getColor()
Return the current drawing color.
java.awt.Color getColorAt(int x, int y)
Return the color at the given pixel.
java.awt.Font getFont()
Get the current font.
int getHeight()
Return the height of the image.
int getTransparency() 透明度
Return the current transparency of the image.
int getWidth()
Return the width of the image.
void mirrorHorizontally() 镜像效果
Mirrors the image horizontally (flip around the x-axis).
void mirrorVertically() 竖直镜像效果
Mirrors the image vertically (flip around the y-axis).
void rotate(int degrees) 旋转degrees这么大的角度
Rotates this image around the center.
void scale(int width, int height) 放缩
Scales this image to a new size.
void setColor(java.awt.Color color)
Set the current drawing color.
void setColorAt(int x, int y, java.awt.Color color) 设置给定像素给定颜色
Sets the color at the given pixel to the given color.
void setFont(java.awt.Font f) 设置字体
Set the current font.
void setTransparency(int t)
Set the transparency of the image.
java.lang.String toString()
Return a text representation of the image.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
下面自己看吧，和前面差不多
Constructor Detail
GreenfootImage
public GreenfootImage(java.lang.String filename)
throws java.lang.IllegalArgumentExceptionCreate an image from an image file. Supported file formats are JPEG, GIF and PNG.
The file name may be an absolute path, or a base name for a file located in the project directory.
Parameters:
filename - Typically the name of a file in the images directory within the project directory.
Throws:
java.lang.IllegalArgumentException - If the image can not be loaded.
GreenfootImage
public GreenfootImage(int width,
int height)Create an empty (transparent) image with the specified size.
Parameters:
width - The width of the image in pixels.
height - The height of the image in pixels.
GreenfootImage
public GreenfootImage(GreenfootImage image)
throws java.lang.IllegalArgumentExceptionCreate a GreenfootImage from another GreenfootImage.
Throws:
java.lang.IllegalArgumentException
Method Detail
getAwtImage
public java.awt.image.BufferedImage getAwtImage()Returns the java.awt.image.BufferedImage that backs this GreenfootImage. Any changes to the returned image will be reflected in the GreenfootImage.
Returns:
The java.awt.image.BufferedImage backing this GreenfootImage
Since:
Greenfoot version 1.0.2
getWidth
public int getWidth()Return the width of the image.
Returns:
Width of the image.
getHeight
public int getHeight()Return the height of the image.
Returns:
Height of the image.
rotate
public void rotate(int degrees)Rotates this image around the center.
Parameters:
degrees -
scale
public void scale(int width,
int height)Scales this image to a new size.
Parameters:
width - Width of new image
height - Height of new image
mirrorVertically
public void mirrorVertically()Mirrors the image vertically (flip around the y-axis).
mirrorHorizontally
public void mirrorHorizontally()Mirrors the image horizontally (flip around the x-axis).
fill
public void fill()Fill the entire image with the current drawing dcolor.
drawImage
public void drawImage(GreenfootImage image,
int x,
int y)Draws the given Image onto this image
Parameters:
image - The image to draw onto this one.
x - x-coordinate for drawing the image.
y - y-coordinate for drawing the image.
setFont
public void setFont(java.awt.Font f)Set the current font. This font will be used for subsequent text operations.
getFont
public java.awt.Font getFont()Get the current font.
setColor
public void setColor(java.awt.Color color)Set the current drawing color. This color will be used for subsequent drawing operations.
Parameters:
color - The color to be used.
getColor
public java.awt.Color getColor()Return the current drawing color.
Returns:
The current color.
getColorAt
public java.awt.Color getColorAt(int x,
int y)Return the color at the given pixel.
Throws:
java.lang.IndexOutOfBoundsException - If the pixel location is not within the image bounds.
setColorAt
public void setColorAt(int x,
int y,
java.awt.Color color)Sets the color at the given pixel to the given color.
setTransparency
public void setTransparency(int t)Set the transparency of the image.
Parameters:
t - A value in the range 0 to 255. 0 is completely transparent (invisible) and 255 is completely opaque (the default).
getTransparency
public int getTransparency()Return the current transparency of the image.
Returns:
A value in the range 0 to 255. 0 is completely transparent (invisible) and 255 is completely opaque (the default).
fillRect
public void fillRect(int x,
int y,
int width,
int height)Fill the specified rectangle. The left and right edges of the rectangle are at x and x + width - 1. The top and bottom edges are at y and y + height - 1. The resulting rectangle covers an area width pixels wide by height pixels tall. The rectangle is filled using the current color.
Parameters:
x - the x coordinate of the rectangle to be filled.
y - the y coordinate of the rectangle to be filled.
width - the width of the rectangle to be filled.
height - the height of the rectangle to be filled.
clear
public void clear()Clears the image.
drawRect
public void drawRect(int x,
int y,
int width,
int height)Draw the outline of the specified rectangle. The left and right edges of the rectangle are at x and x + width. The top and bottom edges are at y and y + height. The rectangle is drawn using the current color.
Parameters:
x - the x coordinate of the rectangle to be drawn.
y - the y coordinate of the rectangle to be drawn.
width - the width of the rectangle to be drawn.
height - the height of the rectangle to be drawn.
drawString
public void drawString(java.lang.String string,
int x,
int y)Draw the text given by the specified string, using the current font and color. The baseline of the leftmost character is at position ( x , y ).
Parameters:
string - the string to be drawn.
x - the x coordinate.
y - the y coordinate.
drawShape
public void drawShape(java.awt.Shape shape)Draw a shape directly on the image. Shapes are specified by the shape interface.
Parameters:
shape - the shape to be drawn.
fillShape
public void fillShape(java.awt.Shape shape)Draw a filled shape directly on the image. Shapes are specified by the shape interface.
Parameters:
shape - the shape to be drawn.
fillOval
public void fillOval(int x,
int y,
int width,
int height)Fill an oval bounded by the specified rectangle with the current drawing color.
Parameters:
x - the x coordinate of the upper left corner of the oval to be filled.
y - the y coordinate of the upper left corner of the oval to be filled.
width - the width of the oval to be filled.
height - the height of the oval to be filled.
drawOval
public void drawOval(int x,
int y,
int width,
int height)Draw an oval bounded by the specified rectangle with the current drawing color.
Parameters:
x - the x coordinate of the upper left corner of the oval to be filled.
y - the y coordinate of the upper left corner of the oval to be filled.
width - the width of the oval to be filled.
height - the height of the oval to be filled.
fillPolygon
public void fillPolygon(int[] xPoints,
int[] yPoints,
int nPoints)Fill a closed polygon defined by arrays of x and y coordinates.
This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.
The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.
Parameters:
xPoints - a an array of x coordinates.
yPoints - a an array of y coordinates.
nPoints - a the total number of points.
drawPolygon
public void drawPolygon(int[] xPoints,
int[] yPoints,
int nPoints)Draws a closed polygon defined by arrays of x and y coordinates. Each pair of (x, y) coordinates defines a point.
This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.
Parameters:
xPoints - an array of x coordinates.
yPoints - an array of y coordinates.
nPoints - the total number of points.
drawLine
public void drawLine(int x1,
int y1,
int x2,
int y2)Draw a line, using the current drawing color, between the points (x1, y1) and (x2, y2).
Parameters:
x1 - the first point's x coordinate.
y1 - the first point's y coordinate.
x2 - the second point's x coordinate.
y2 - the second point's y coordinate.
toString
public java.lang.String toString()Return a text representation of the image.
Overrides:
toString in class java.lang.Object